html {
  font-size: 50px;
}
a {
  text-decoration: none;
}
.bordertop::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 1px;
  border-top: 1px solid #e0e0e0;
}
.borderright::before {
  content: "";
  position: absolute;
  width: 1px;
  height: 100%;
  border-left: 1px solid #e0e0e0;
  left: 50%;
}
.borderbottom::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 1px;
  border-bottom: 1px solid #e0e0e0;
  left: 0;
  bottom: 0;
}
